Charge-Transfer Salts of Electron-Rich Diruthenium and Macrocyclic Tetraruthenium Complexes

富电子二钌和大环四钌配合物的电荷转移盐

• 批准号: 435877990
• 负责人: Professor Dr. Rainer Winter
• 金额: --
• 依托单位: Arbeitsgruppe Anorganische Chemie: Organometallchemie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/435877990?language=en
• 关键词: Charge; Transfer; Salts; Electron; Rich

The aim of this project is the synthesis and detailed characterisation of dinuclear and macrocyclic tetraruthenium complexes with expanded, pi-conjugated linkers and of their charge transfer salts. These complexes are constructed such as to entail the structural and electronic prerequisites for generating electrically conductive charge transfer salts with pi-stacked structures when combinded with appropriate strong organic electron acceptors such as tetrahalogenated bezoquinones X4BQ or tetracyano-para-quinodimethanes TCNQ and F4TCNQ. In particular, we will investigate the resulting charge-transfer salts with respect to their ionicity (i. e. the fraction of positive / negative charge at the donor / acceptor) and their optical, electronic and magnetic properties. We will obtain detailed information as to the extent of charge transfer between the organometallic donor and the organic acceptor by analyzing the changes of the Ru(CO) vibrational energies of the ruthenium alkenyl donors and of the CO and CN stretching frequencies of the organic acceptor as well as by srutinizing the charge transfer bands in their electronic spectra and electronic paramagnetic resonance spectra. We will also address the important question of how the ionicities and structures of the charge transfer salts depend on the stoichiometric ratio of the donor and the acceptor and their intrinsic redox potentials.

本项目的目的是合成和详细表征双核和大环四砷配合物与扩展，π共轭连接及其电荷转移盐。当这些配合物与适当的强有机电子受体（如四卤化苯醌X4BQ或四氰对喹二甲烷TCNQ和F4TCNQ）结合时，这些配合物的结构和电子条件都是产生具有pi堆叠结构的导电电荷转移盐的先决条件。特别是，我们将研究所得的电荷转移盐的离子性（即供体/受体的正电荷/负电荷的比例）及其光学、电子和磁性能。通过分析钌烯基给体的Ru（CO）振动能的变化，有机受体的CO和CN伸展频率的变化，以及它们的电子能谱和电子顺磁共振能谱中的电荷转移带，我们将获得有机金属给体和有机受体之间电荷转移程度的详细信息。我们还将讨论电荷转移盐的离子性和结构如何取决于供体和受体的化学计量比及其内在氧化还原电位。